Home / 2,680.70-4,025.09-2,189.30

Finding the Fourth Proportional to 2,680.70, 4,025.09 and 2,189.30

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Solution

The fourth proportional to 2,680.70, 4,025.09 and 2,189.30 is: 3,287.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.70 : 4,025.09 = 2,189.30 : x
  2. Step 2: Convert to fraction form
    2,680.70/4,025.09 = 2,189.30/x
  3. Step 3: Cross multiply
    2,680.70x = 4,025.09 × 2,189.30
  4. Step 4: Simplify right side
    2,680.70x = 8,812,129.54
  5. Step 5: Solve for x
    x = 8,812,129.54/2,680.70
  6. Step 6: Final answer
    x = 3,287.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.